IR21531 International Rectifier, IR21531 Datasheet

IC DRVR HALF BRDG SELF-OSC 8-DIP

IR21531

Manufacturer Part Number
IR21531
Description
IC DRVR HALF BRDG SELF-OSC 8-DIP
Manufacturer
International Rectifier
Datasheet

Specifications of IR21531

Configuration
Half Bridge
Input Type
Self Oscillating
Current - Peak
250mA
Number Of Configurations
1
Number Of Outputs
2
High Side Voltage - Max (bootstrap)
600V
Voltage - Supply
10 V ~ 20 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Delay Time
-
Other names
*IR21531

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www.irf.com
Features
Description
The IR21531(D)(S) are an improved version of the
popular IR2155 and IR2151 gate driver ICs, and in-
corporates a high voltage half-bridge gate driver with a front end oscillator similar to the industry standard
CMOS 555 timer. The IR21531 provides more functionality and is easier to use than previous ICs. A shutdown
feature has been designed into the C T pin, so that both gate driver outputs can be disabled using a low voltage
control signal. In addition, the gate driver output pulse widths are the same once the rising undervoltage
lockout threshold on V CC has been reached, resulting in a more stable profile of frequency vs time at
startup. Noise immunity has been improved significantly, both by lowering the peak di/dt of the gate drivers,
and by increasing the undervoltage lockout hysteresis to 1V. Finally, special attention has been payed to
maximizing the latch immunity of the device, and providing comprehensive ESD protection on all pins.
Shutdown
Integrated 600V half-bridge gate driver
15.6V zener clamp on Vcc
True micropower start up
Tighter initial deadtime control
Low temperature coefficient deadtime
Shutdown feature (1/6th Vcc) on C
Increased undervoltage lockout Hysteresis (1V)
Lower power level-shifting circuit
Constant LO, HO pulse widths at startup
Lower di/dt gate driver for better noise immunity
Low side output in phase with R
Internal 50nsec (typ.) bootstrap diode (IR21531D)
Excellent latch immunity on all inputs and outputs
ESD protection on all leads
Also available LEAD-FREE
VCC
RT
CT
COM
IR21531(S)
SELF-OSCILLATING HALF-BRIDGE DRIVER
HO
VB
VS
LO
T
T
pin
Typical Connections
600V
MAX
Product Summary
Packages
Shutdown
Preliminary Data Sheet No. PD60131 revM
Deadtime (typ.)
Duty Cycle
V
IR21531(D)(S) & (PbF)
V
OFFSET
T r /T p
clamp
8 Lead PDIP
VCC
RT
CT
COM
IR21531(D)
HO
VB
VS
LO
600V max.
80/40ns
0.6 µs
15.6V
50%
8 Lead SOIC
600V
MAX
1

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IR21531 Summary of contents

Page 1

... CMOS 555 timer. The IR21531 provides more functionality and is easier to use than previous ICs. A shutdown feature has been designed into the C T pin, so that both gate driver outputs can be disabled using a low voltage control signal ...

Page 2

... IR21531(D)(S) & (PbF) Absolute Maximum Ratings Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage param- eters are absolute voltages referenced to COM, all currents are defined positive into any lead. The thermal resistance and power dissipation ratings are measured under board mounted and still air conditions. ...

Page 3

... Timing resistor value pin capacitor value T T 1000000 100000 330pf 10000 470pF 1nF 1000 2.2nF 4.7nF 10nF 100 10 10 100 www.irf.com IR21531(D)(S) & (PbF) IR21531 RT vs Frequency IR2153 RT vs Frequency CT Values 1000 10000 RT (ohms) Min. Max. Units 10 — k 330 — pF 100000 1000000 3 ...

Page 4

... QBSUV BS I Quiescent VBS supply current QBS V Minimum required V voltage for proper BSMIN BS functionality from Offset supply leakage current LK V Bootstrap diode forward voltage (IR21531D) F Oscillator I/O Characteristics Symbol Definition f osc Oscillator frequency d R pin duty cycle pin current UV-mode C pin pulldown current ...

Page 5

... Low side gate driver output V High voltage floating supply return S HO High side gate driver output V High side gate driver floating supply B Lead Assignments 8 Lead DIP IR21531(D) NOTE: The IR21531D is offered in 8 lead DIP only. www.irf.com IR21531(D)(S) & (PbF) Min. Typ. -V — 0 BIAS O — 0 — ...

Page 6

... IR21531(D)(S) & (PbF) Functional Block Diagram for IR21531( R R/2 LOGIC UV DETECT Functional Block Diagram for IR21531D R R/2 LOGIC UV DETECT NOTE: The separate die LEVEL PULSE SHIFT FILTER DEAD PULSE TIME GEN DELAY DEAD TIME HV LEVEL PULSE SHIFT FILTER DEAD PULSE TIME ...

Page 7

... IR21531(D)(S) & (PbF) 8 Lead PDIP 8 Lead SOIC 01-3003 01 01-0021 08 7 ...

Page 8

... IR21531(D)(S) & (PbF) Vccuv+ Vcc 2 1 Figure 1. Input/Output Timing Diagram (HO) (LO) Figure 2. Switching Time Waveform Definitions 8 V CLAMP 50% 50% 90 90% Figure 3. Deadtime Waveform Definitions 10% www.irf.com ...

Page 9

... SPN code) Assembly site code Per SCOP 200-002 ORDER INFORMATION Leadfree Part 8-Lead PDIP IR21531 order IR21531PbF 8-Lead SOIC IR21531S order IR21531SPbF 8-Lead PDIP IR21531D order IR21531DPbF This product has been qualified per industrial level Data and specifications subject to change without notice. ...

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